新手：请教使用C＃编程如何获取CAD图纸中的线条信息

wyrosebud

使用C＃编程，如何获取CAD图纸中每种线条的颜色及粗细信息，并且可以使用程序来设置每种颜色线条的粗细？

或者有没有相应的API提供，谢谢！

flyerwon

获取块表对象，遍历 如果是LINE对象就取出。

DocumentLock doc=Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.LockDocument();
            Database db = HostApplicationServices.WorkingDatabase;
            using (Transaction trans = db.TransactionManager.StartTransaction())
            #region  开始事务
            {
                BlockTable bt = (BlockTable)trans.GetObject(HostApplicationServices.WorkingDatabase.BlockTableId, OpenMode.ForRead);
                BlockTableRecord btr = (BlockTableRecord)trans.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForRead);
                foreach (ObjectId id in btr)
                #region  遍历图元
                {
                    Autodesk.AutoCAD.DatabaseServices.Entity entity = (Autodesk.AutoCAD.DatabaseServices.Entity)trans.GetObject(id, OpenMode.ForRead);
                    if (entity is Line)
                    {
                        Line line = (Line)entity;
                        //this.listBox1.Items.Clear();
                        this.listBox1.Items.Add("找到线" + line.Id.ToString() + "：开始点X:" + line.StartPoint.X.ToString() + " Y:" + line.StartPoint.Y.ToString() + "结束点X:" + line.EndPoint.X.ToString() + " Y:" + line.EndPoint.Y.ToString());
                        //MessageBox.Show("找到线：开始点X:" +line.StartPoint.X.ToString()+" Y:"+line.StartPoint.Y.ToString()+"结束点X:"+line.EndPoint.X.ToString()+" Y:"+line.EndPoint.Y.ToString());
                    }
                    else
                    {
                        if (entity is DBText)
                        {
                            DBText dbt = (DBText)entity;
                            this.listBox1.Items.Add("找到文本：" + dbt.Id.ToString() + "：开始点X：" + dbt.Position.X.ToString() + "  Y:" + dbt.Position.Y.ToString());
                        }
                        MessageBox.Show("抱歉没有找到任何东西！！");
                    }
                }
                #endregion
            }
            #endregion